19999628

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 21126772

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 47, 76, 94, 188, 209, 418, 509, 517, 836, 893, 1018, 1034, 1786, 2036, 2068, 3572, 5599, 9671, 9823, 11198, 19342, 19646, 22396, 23923, 38684, 39292, 47846, 95692, 106381, 212762, 263153, 425524, 454537, 526306, 909074, 1052612, 1818148, 4999907, 9999814, 19999628]

約数ペア:

[(1, 19999628), (2, 9999814), (4, 4999907), (11, 1818148), (19, 1052612), (22, 909074), (38, 526306), (44, 454537), (47, 425524), (76, 263153), (94, 212762), (188, 106381), (209, 95692), (418, 47846), (509, 39292), (517, 38684), (836, 23923), (893, 22396), (1018, 19646), (1034, 19342), (1786, 11198), (2036, 9823), (2068, 9671), (3572, 5599)]